/*
 * @(#)XfeditRulebaseMatrixPanel.java        1.0 2000/05/09
 *
 * This file is part of Xfuzzy 3.0, a design environment for fuzzy logic
 * based systems.
 *
 * (c) 2000 IMSE-CNM. The authors may be contacted by the email address:
 *                    xfuzzy-team@imse.cnm.es
 *
 * Xfuzzy is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Xfuzzy is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 */

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
//REPRESENTACION MATRICIAL DE LA BASE DE REGLAS		//
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//

package xfuzzy.xfedit;

import xfuzzy.lang.*;
import xfuzzy.util.*;
import javax.swing.*;
import java.awt.*;

public class XfeditRulebaseMatrixPanel extends JPanel {

	/**
	 * C�digo asociado a la clase serializable
	 */
	private static final long serialVersionUID = 95505666603035L;

	//----------------------------------------------------------------------------//
	//                            MIEMBROS PRIVADOS                               //
	//----------------------------------------------------------------------------//

	/**
	 * Modelo de la tabla que representa la base de reglas en formato matricial
	 */
	private XfeditRulebaseMatrixModel model;

	//----------------------------------------------------------------------------//
	//                                CONSTRUCTOR                                 //
	//----------------------------------------------------------------------------//

	/**
	 * Constructor
	 */
	public XfeditRulebaseMatrixPanel() {
		super();
		setLayout(new BoxLayout(this,BoxLayout.Y_AXIS));
	}

	//----------------------------------------------------------------------------//
	//                             M�TODOS P�BLICOS                               //
	//----------------------------------------------------------------------------//

	/**
	 * Obtiene las reglas y las almacena en la base de reglas
	 */
	public boolean getRules(KnowledgeBase copy) {
		if(model == null) return true;
		else return model.getRules(copy);
	}

	/**
	 * Actualiza el contenido del panel
	 */
	public void refresh(KnowledgeBase copy) {
		removeAll();
		Variable inputs[] = copy.getInputs();
		Variable outputs[] = copy.getOutputs();
		if(inputs.length != 2 || outputs.length != 1) {
			add(Box.createVerticalGlue());
			add(Box.createVerticalStrut(10));
			add(msglabel("Cannot represent this rulebase as a matrix"));
			add(Box.createVerticalStrut(10));
			add(msglabel("Matrix form needs two input variables"));
			add(msglabel("and one output variable"));
			add(Box.createVerticalStrut(10));
			add(Box.createVerticalGlue());
			return;
		}
		model = new XfeditRulebaseMatrixModel(copy);
		if(!model.isValid()) {
			add(Box.createVerticalGlue());
			add(Box.createVerticalStrut(10));
			add(msglabel("Cannot represent this rulebase as a matrix"));
			add(Box.createVerticalStrut(10));
			add(msglabel("Rules must include only AND conectives"));
			add(msglabel("and equality relations"));
			add(Box.createVerticalStrut(10));
			add(Box.createVerticalGlue());
			return;
		}

		JLabel label0 = new JLabel(inputs[0].toString());
		label0.setForeground(Color.black);
		label0.setFont(XConstants.font);

		JLabel label1 = new JLabel(inputs[1].toString());
		label1.setForeground(Color.black);
		label1.setFont(XConstants.font);

		JTable table = new JTable(model);
		table.setDefaultRenderer(Object.class,model);
		table.setDefaultEditor(Object.class,model.getEditor());
		table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		table.setColumnSelectionAllowed(false);
		table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
		table.getTableHeader().setReorderingAllowed(false);
		table.getTableHeader().setFont(XConstants.font);

		Box box = new Box(BoxLayout.X_AXIS);
		box.add(Box.createHorizontalStrut(10));
		box.add(label0);
		box.add(Box.createHorizontalStrut(10));
		box.add(new JScrollPane(table));
		box.add(Box.createHorizontalStrut(10));

		add(Box.createVerticalGlue());
		add(Box.createVerticalStrut(10));
		add(label1);
		add(Box.createVerticalStrut(10));
		add(box);
		add(Box.createVerticalStrut(10));
		add(Box.createVerticalGlue());
	}

	//----------------------------------------------------------------------------//
	//                             M�TODOS PRIVADOS                               //
	//----------------------------------------------------------------------------//

	/**
	 * Genera una etiqueta con el mensaje especificado
	 */
	private Box msglabel(String msg) {
		JLabel label = new JLabel(msg);
		label.setFont(XConstants.font);
		label.setForeground(Color.red);
		Box box = new Box(BoxLayout.X_AXIS);
		box.add(Box.createHorizontalGlue());
		box.add(label);
		box.add(Box.createHorizontalGlue());
		return box;
	}
}

